Mounting Specifications


 

 

 


♦  GM1000 HPS German Equatorial 

 

RA/DEC Axes

Axes Diameters, RA and DEC  1.2" (30mm) Diameter, Solid
Material Alloy Steel (3X stiffness of Aluminum)
Bearings Multiple Roller Conical, Preloaded
   

Worm Gearing

Worm Wheel, RA and DEC 5" (125mm) Diameter, 250 Tooth
Material Bronze B14, aluminum body
Worm 0.79" (20mm) Diameter, Tempered and Ground, Alloy Steel
Backlash Control Near-Zero, Spring-loaded Worm (rigidly supported)
   

Motors/Control

Motors AC Servo Brushless, F.I.S.
Power Supply 24V DC
Power Consumption 0.5A at sidereal rate, 3A max
Control System QCI + HPS
Guide Speed 0.5X
Go-To Speed 20/sec max.
Pointing Precision 3' typical with just polar alignment
SW Pointing Precision < 20" with internal 25 star mapping
Tracking Precision

1 arcsec peak-peak (typical 15 minutes), 0.6 arcsec RMS

(w/ internal 25 - stars software mapping and compensation of flexure and polar alignment errors)

Communication Ports RS-232, GPS port, autoguide ST-4 protocol port, Ethernet Port
   

General

Weight 43 lbs (19.5 kg), mount head only
Capacity 55 lbs (25 kg)
Latitude Range 0 - 82, fine adjustment with altitude knob
Azimuth Adjustment 7.5, fine adjustable with double screws
Counterweight Shaft 1.2" (30 mm) diameter stainless steel, 3.7 lb (1.7 kg)
Counterweights 6.6 lb (3 kg) and 13 lb (6 kg), stainless steel, no-mar locking
Polar Alignment Scope NO polar alignment scope required - extremely accurate software alignment routines eliminate the need for a polar alignment scope.
   

 

 

 


 

 

 

♦  GM2000 HPS Ultraportable, German Equatorial 

 

RA/DEC Axes

Axes Diameters, RA and DEC  2" (50mm) Diameter, Thick-wall
Material Alloy Steel (3X stiffness of Aluminum)
Bearings Multiple Roller Conical, Preloaded
   

Worm Gearing

Worm Wheel, RA and DEC 6.8" (172mm) Diameter, 215 Tooth
Material Bronze B14, aluminum body
Worm 0.95" (24mm) Diameter, Tempered and Ground, Alloy Steel
Backlash Control Near-Zero, Spring-loaded Worm (rigidly supported)
   

Motors/Control

Motors AC Servo Brushless, F.I.S.
Power Supply 24V DC
Power Consumption 0.7A at sidereal rate, 3A max
Control System QCI + HPS
Guide Speed 0.5X
Go-To Speed 20/sec max.
Pointing Precision 3' typical with just polar alignment
SW Pointing Precision < 20" with internal 25 star mapping
Tracking Precision

1 arcsec peak-peak (typical 15 minutes), 0.6 arcsec RMS

(w/ internal 25 - stars software mapping and compensation of flexure and polar alignment errors)

Communication Ports RS-232, GPS port, autoguide ST-4 protocol port, Ethernet Port
   

General

Weight 62 lbs (28 kg), splits into two pieces, Dec 28lbs (13 kg) and RA 33lbs (15 kg).
Capacity 132 lbs (60 kg) maximum, 90lbs (40 kg) optimum, without counterweights
Latitude Range 22 - 66, fine adjustment with altitude knob, 7 point altitude clamping
Azimuth Adjustment 10, fine adjustable with double screws
Counterweight Shaft 1.6" (40 mm) diameter stainless steel, 9 lb (4 kg), quick-connect feature.
Counterweights 13 lb (6 kg) and 26 lb (12 kg), nickel plated steel, no-mar locking
Polar Alignment Scope NO polar alignment scope required - extremely accurate software alignment routines eliminate the need for a polar alignment scope.
   

all specifications subject to change without prior notice


 

♦  GM4000 HPS Observatory, German Equatorial 

 

RA/DEC Axes

Axis Diameter, RA 3.4" (85mm) Diameter, Thick-wall
Axis Diameter, DEC 3.2" (80mm) Diameter, Thick-wall
Material Alloy Steel (3X stiffness of Aluminum)
Bearings Multiple Roller Conical, Preloaded, 5.1" (130 mm) Diameter
Through-the-Mount Cabling 2.4" (60 mm) pass-through holes permit internal routing of cables for connection to CCD cameras, filter wheels, electric focusers, etc
   

Worm Gearing

Worm Wheel, RA 13" (330mm) Diameter, 430 Tooth
Worm Wheel, DEC 9.6" (244mm) Diameter, 315 Tooth
Material Bronze B14
Worm 1.3" (32mm) Diameter, Tempered and Ground, Alloy Steel
Backlash Control Near-Zero, Spring-loaded Worm (rigidly supported)
   

Motors/Control

Motors AC Servo Brushless, F.I.S.
Power Supply 24V DC
Power Consumption 1.5 A at sidereal rate, 5 A max
Control System QCI + HPS
Guide Speed 0.5X
Go-To Speed 5/sec max.
Pointing Precision < 2' typical, raw
SW Pointing Precision < 15" with internal 25 star mapping
Tracking Precision

1 arcsec peak-peak (typical 15 minutes), 0.6 arcsec RMS

(w/ internal 25 - stars software mapping and compensation of flexure and polar alignment errors)

Communication Ports RS-232, GPS port, autoguide ST-4 protocol port, Ethernet Port
   

General

Weight 265 lbs (120 kg)
Capacity 330 lbs (150 kg) maximum, 275lbs (125 kg) optimum, without counterweights
Latitude Range 23 - 70, fine adjustment with altitude knob, 7 point altitude clamping
Azimuth Adjustment 10, fine adjustable with double screws
Counterweight Shaft 2.4" (60 mm) diameter stainless steel, Length 24" (600mm), 29 lb (13 kg), easy to install threaded connection.
Counterweights (sold separate) 44 lb (20 kg), 9" (230mm) diameter stainless steel, no-mar locking. 
Polar Scope NO polar alignment scope required - extremely accurate software alignment routines eliminate the need for a polar alignment scope.
Overall Height (polar axis at 45) approx. 31.5"  (800 mm)
Width (diameter of base) 14.2" (360 mm) - minimum recommended pier size 14" dia.
Length (without counterweight shaft) approx.  29.5" (750 mm)
   
   

all specifications subject to change without prior notice


last updated 08/24/13

 

 

 

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